Rescript runtime error with commonjs

So I have been trying to upgrade my projects to Rescript v12 from v11. I’ve created a new project but still see the same issue.

package.json:

{
  "name": "test",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "rescript": "^12.0.1"
  }
}

rescript.json:

{
  "name": "test",
  "sources": [
    {
      "dir": "src",
      "subdirs": true
    }
  ]
}

src/Index.res:

Console.log(Some(1)->Option.map(x => x + 1))

I encounter this issue:

❯ node src/Index.js
file:///tmp/test/node_modules/@rescript/runtime/lib/js/Stdlib_Option.js:3
let Stdlib_JsError = require("./Stdlib_JsError.js");
                     ^

ReferenceError: require is not defined in ES module scope, you can use import instead
This file is being treated as an ES module because it has a '.js' file extension and '/tmp/test/node_modules/@rescript/runtime/package.json' contains "type": "module". To treat it as a CommonJS script, rename it to use the '.cjs' file extension.
    at file:///tmp/test/node_modules/@rescript/runtime/lib/js/Stdlib_Option.js:3:22
    at ModuleJobSync.runSync (node:internal/modules/esm/module_job:514:37)
    at ModuleLoader.importSyncForRequire (node:internal/modules/esm/loader:425:47)
    at loadESMFromCJS (node:internal/modules/cjs/loader:1578:24)
    at Module._compile (node:internal/modules/cjs/loader:1743:5)
    at Object..js (node:internal/modules/cjs/loader:1893:10)
    at Module.load (node:internal/modules/cjs/loader:1481:32)
    at Module._load (node:internal/modules/cjs/loader:1300:12)
    at TracingChannel.traceSync (node:diagnostics_channel:328:14)
    at wrapModuleLoad (node:internal/modules/cjs/loader:245:24)

Node.js v24.11.1

If I set package specs to es6 and use type module in my project package.json, it runs.
Is the runtime broken with commonjs or am I missing something?